Other
Radford University: Environmental History Timeline
Worrying over the environment is nothing new, just the term "environmental" is. Investigate the history of concerns dating back to ancient civilization and looking forward into the future.
University of Kentucky
University of Kentucky: Earth Science Classroom Activities
A collection of links to activities and lessons that could be used for Earth science concepts including the foil record, creating a timeline of Earth's history, plate tectonics, dinosaurs, and the progression of life on Earth.
TED Talks
Ted: Ted Ed: Four Ways to Understand the Earth's Age
The Earth is 4.6 billion years old- but how can humans relate to a number so colossal, and where do we fit on the geologic timeline? Joshua Sneideman reminds us of our time and place in the universe. [3:45]
Woods Hole Oceanographic Institution
Woods Hole Oceanography Institute: History of the Earth
This interactive timeline reveals key geologic and biological events starting back 4.8 billion years to the present.
PBS
Nova: Magnetic Storms: When Compasses Pointed South
Earth's magnetic poles have reversed themselves throughout its long history. Find out what scientists know about these reversals. A geologic time line shows when the reversals occurred.